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From: Andi Kleen <ak@linux.intel.com>
To: Dave Hansen <dave.hansen@intel.com>,
	"Kuppuswamy,
	Sathyanarayanan"  <sathyanarayanan.kuppuswamy@linux.intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@kernel.org>,
	Hans de Goede <hdegoede@redhat.com>,
	Mark Gross <mgross@linux.intel.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>
Cc: Peter H Anvin <hpa@zytor.com>, Tony Luck <tony.luck@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Kirill Shutemov <kirill.shutemov@linux.intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	platform-driver-x86@vger.kernel.org, bpf@vger.kernel.org,
	netdev@vger.kernel.org
Subject: Re: [PATCH v3 5/6] platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver
Date: Tue, 20 Jul 2021 14:16:08 -0700	[thread overview]
Message-ID: <4f8dc9dd-0dbc-bff9-570b-0d20f673d3f0@linux.intel.com> (raw)
In-Reply-To: <52caa0e2-d3da-eef0-da5f-e83cc54c133c@intel.com>


On 7/20/2021 10:59 AM, Dave Hansen wrote:
> On 7/20/21 10:52 AM, Kuppuswamy, Sathyanarayanan wrote:
>>> Why does this need to use the page allocator directly?
> ^^ You didn't address this question.


The address needs to be naturally aligned, and I'm not sure all slab 
allocators guarantee 64 byte alignment. So using the page allocator 
seems to be safer. I guess a comment would be good.


-Andi


  reply	other threads:[~2021-07-20 21:19 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20  4:55 [PATCH v3 0/6] Add TDX Guest Support (Attestation support) Kuppuswamy Sathyanarayanan
2021-07-20  4:55 ` [PATCH v3 1/6] x86/tdx: Add TDREPORT TDX Module call support Kuppuswamy Sathyanarayanan
2021-07-20  4:55 ` [PATCH v3 2/6] x86/tdx: Add GetQuote TDX hypercall support Kuppuswamy Sathyanarayanan
2021-07-20  4:55 ` [PATCH v3 3/6] x86/tdx: Add SetupEventNotifyInterrupt " Kuppuswamy Sathyanarayanan
2021-07-20  4:55 ` [PATCH v3 4/6] x86/tdx: Add TDX Guest event notify interrupt vector support Kuppuswamy Sathyanarayanan
2021-07-20  4:55 ` [PATCH v3 5/6] platform/x86: intel_tdx_attest: Add TDX Guest attestation interface driver Kuppuswamy Sathyanarayanan
2021-07-20 16:53   ` Dave Hansen
2021-07-20 17:52     ` Kuppuswamy, Sathyanarayanan
2021-07-20 17:59       ` Dave Hansen
2021-07-20 21:16         ` Andi Kleen [this message]
2021-07-20 21:22           ` Dave Hansen
2021-07-28  7:30   ` Hans de Goede
2021-07-20  4:55 ` [PATCH v3 6/6] tools/tdx: Add a sample attestation user app Kuppuswamy Sathyanarayanan

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